एपीए उद्धरण

Open Software foundation. (1991). Open software foundation application enviornment specification. Prentice-Hall.

शिकागो स्टाइल उद्धरण

Open Software foundation. Open Software Foundation Application Enviornment Specification. Prentice-Hall, 1991.

एमएलए उद्धरण

Open Software foundation. Open Software Foundation Application Enviornment Specification. Prentice-Hall, 1991.